Display screen with a graphical user interface



The sole FIGURE is a front view of the display screen with a graphical user interface.

The outermost broken lines showing a device in the sole FIGURE depict environmental subject matter and form no part of the claimed design. The remaining broken lines illustrate portions of the display screen with graphical user interface that form no part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 